Abstract
Rats treated with haloperidol that developed vacuous chewing movements (VCM), a possible animal model of tardive dyskinesia, were studied with quantitative autoradiography for dopamine type-1 (D1) and type-2 (D2) receptors as well as dopamine re-uptake sites. Haloperidol increased striatal D2 receptors, but did not affect D1 receptors or the dopamine re-uptake site. D2 receptor increases occurred in rats with and without VCMs. In so far as VCM is a model for tardive dyskinesia, haloperidol induced increases in striatal D2 receptors do not appear to be etiologic for these abnormal movements.
Original language | English (US) |
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Pages (from-to) | 217-222 |
Number of pages | 6 |
Journal | Brain research |
Volume | 646 |
Issue number | 2 |
DOIs | |
State | Published - May 23 1994 |
Externally published | Yes |
Keywords
- Autoradiography
- Dopamine
- Dopamine receptor
- Neuroleptic
- Tardive dyskinesia
- Vacuous chewing movement
ASJC Scopus subject areas
- General Neuroscience
- Molecular Biology
- Clinical Neurology
- Developmental Biology